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NURS 2750 > Arrhythmias > Flashcards

Arrhythmias Flashcards

1
Q

what is p wave

A

atrial depolarization

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2
Q

what is PR segment

A

time for impulse to travel from atria to ventricles

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3
Q

what is QRS wave

A

ventricular depolarization

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4
Q

what is ST segment

A

end of ventricular depolarization, start of repolarization

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5
Q

what is T wave

A

repolarization of ventricles

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6
Q

what is U wave

A

may indicate hypo- (abnormal)

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7
Q

what QT segment

A

total time from QRS complex to end of T wave (depolarization to repolarization)

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8
Q

what is normal sinus rhythm

A

normal

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9
Q

EKG of sinus tachycardia

A

HR greater than 100 bpm

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10
Q

EKG of sinus bradycardia

A

HR less than 60 bpm

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11
Q

what is sinus arrest

A

SA node cease fire for a short period

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12
Q

EKG of sinus arrest

A

loss of 1 or more P waves associated with QRS

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13
Q

what is premature atrial contraction (PAC)

A

extra contractions of the atria muscles

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14
Q

EKG of PAC

A

P waves may be partially or completely hidden by T waves

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15
Q

what is atrial flutter

A

electrical rhythms travel in a loop mostly in the right atrium

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16
Q

EKG of atrial flutter

A

P waves “saw tooth” followed by QRS

17
Q

what is atrial fibrillation

A

random electrical impulses from ectopic sites around the atria

18
Q

EKG of a. fib.

A

no P waves, irregular narrow QRS complex

19
Q

what is 1st degree AV block

A

slowed electrical signals, all reach ventricle

20
Q

what is 2nd degree AV block

A

missed ventricular contractions

21
Q

what is 3rd degree AV block

A

no transmission to ventricles

22
Q

EKG 1st degree

A

longer PR interval

23
Q

EKG 2nd degree

A

long PR wave and P wave, not all P waves followed by QRS complex

24
Q

EKG 3rd degree

A

irregular but slow QRS

25
Q

what is bundle branch block

A

interference with conduction of one bunch branch , one ventricle usually

26
Q

EKG of bundle branch block

A

broader QRS complex

27
Q

what is ventricular tachycardia

A

single strong firing site in one of the ventricles

28
Q

EKG of ventricular tachycardia

A

wide and distorted QRS complex, P wave absent

29
Q

what is ventricular fibrillation

A

multiple weak ectopic sites in the ventricles

30
Q

EKG of ventricular fibrillation

A

no identifiable P waves, T wave, or QRS complex

31
Q

what premature ventricular contraction (PVC)

A

prematurely activated ventricles by ectopic sites in one of the ventricles

32
Q

EKG of PVC

A

absent P wave, widened distorted QRS, premature beats

NURS 2750 (11 decks)

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